A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Multicolorswitcher.php

Line Number: 14

Backtrace:

File: E:\vhosts\icachd.net\httpdocs\new\application\controllers\Multicolorswitcher.php
Line: 14
Function: _error_handler

File: E:\vhosts\icachd.net\httpdocs\new\index.php
Line: 315
Function: require_once